gh-146228: Better fork support in cached FastPath by jaraco · Pull Request #146231 · python/cpython

jaraco · 2026-03-20T18:51:23Z

Also includes minor updates from python/importlib_metadata#533.

Issue: Better fork support in cached FastPath instances #146228

jaraco · 2026-03-20T19:13:41Z

Well that's interesting. The new test is failing due to a new deprecation of forking multithreaded calls.

ERROR: test_fastpath_cache_cleared_in_forked_child (test.test_importlib.metadata.test_zip.TestEgg.test_fastpath_cache_cleared_in_forked_child)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/runner/work/cpython/cpython/Lib/test/test_importlib/metadata/test_zip.py", line 77, in test_fastpath_cache_cleared_in_forked_child
    proc.start()
    ~~~~~~~~~~^^
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
                  ~~~~~~~~~~~^^^^^^
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/context.py", line 290, in _Popen
    return Popen(process_obj)
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/popen_fork.py", line 20, in __init__
    self._launch(process_obj)
    ~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/popen_fork.py", line 70, in _launch
    self.pid = os.fork()
               ~~~~~~~^^
DeprecationWarning: This process (pid=40559) is multi-threaded, use of fork() may lead to deadlocks in the child.

======================================================================
ERROR: test_fastpath_cache_cleared_in_forked_child (test.test_importlib.metadata.test_zip.TestZip.test_fastpath_cache_cleared_in_forked_child)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/runner/work/cpython/cpython/Lib/test/test_importlib/metadata/test_zip.py", line 77, in test_fastpath_cache_cleared_in_forked_child
    proc.start()
    ~~~~~~~~~~^^
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
                  ~~~~~~~~~~~^^^^^^
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/context.py", line 290, in _Popen
    return Popen(process_obj)
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/popen_fork.py", line 20, in __init__
    self._launch(process_obj)
    ~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/Users/runner/work/cpython/cpython/Lib/multiprocessing/popen_fork.py", line 70, in _launch
    self.pid = os.fork()
               ~~~~~~~^^
DeprecationWarning: This process (pid=40559) is multi-threaded, use of fork() may lead to deadlocks in the child.

The issue doesn't manifest for me when I run tests locally, but that's likely because I'm running in some single threaded mode.

jaraco · 2026-03-20T19:27:53Z

I see a bunch of tests using @warnings_helper.ignore_fork_in_thread_deprecation_warnings().

jaraco · 2026-03-20T20:06:07Z

Since this code has been available in importlib_metadata for a good while, I'm going to proceed with merging this so it can unblock subsequent changes (#143387).

bedevere-bot · 2026-03-20T20:28:47Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot WASM Emscripten 3.x (tier-3) has failed when building commit b5e4c46.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://un5h20eeybzp4em2p7qwc9h0br.julianrbryant.com/#/builders/1810/builds/2097) and take a look at the build logs.
Check if the failure is related to this commit (b5e4c46) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://un5h20eeybzp4em2p7qwc9h0br.julianrbryant.com/#/builders/1810/builds/2097

Summary of the results of the build (if available):

Click to see traceback logs

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remote: Counting objects: 100% (37/37), done.        
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remote: Total 20 (delta 17), reused 1 (delta 0), pack-reused 0 (from 0)        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'b5e4c46be24d1fade0deda211785c04a74a722cc'.

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Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at b5e4c46be24 gh-146228: Better fork support in cached FastPath (#146231)
Switched to and reset branch 'main'

configure: WARNING: no system libmpdec found; falling back to pure-Python version for the decimal module

In file included from ../../Include/internal/pycore_dict.h:11,
                 from ../../Objects/typeobject.c:8:
In function ‘Py_DECREF_MORTAL’,
    inlined from ‘PyStackRef_CLOSE’ at ../../Include/internal/pycore_stackref.h:680:9,
    inlined from ‘_PyThreadState_PopCStackRef’ at ../../Include/internal/pycore_stackref.h:788:5,
    inlined from ‘vectorcall_maybe’ at ../../Objects/typeobject.c:3117:9:
../../Include/internal/pycore_object.h:456:8: warning: array subscript 0 is outside array bounds of ‘PyObject[0]’ {aka ‘struct _object[]’} [-Warray-bounds]
  456 |     if (--op->ob_refcnt == 0) {
      |        ^

v24.14.0 is already installed.
configure: ../../../../configure 'CFLAGS=-DPY_CALL_TRAMPOLINE -sUSE_BZIP2' PKG_CONFIG=pkg-config --host=wasm32-emscripten --build=x86_64-pc-linux-gnu --with-build-python=/home/emscripten/buildarea/3.x.rkm-emscripten.emscripten/build/cross-build/build/python --without-pymalloc --disable-shared --disable-ipv6 --enable-big-digits=30 --enable-wasm-dynamic-linking --prefix=/home/emscripten/emsdk-versions/4.0.12/prefix

In file included from ../../../../Modules/_remote_debugging/module.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../../../Modules/_remote_debugging/object_reading.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
1 warning generated.
In file included from ../../../../Modules/_remote_debugging/code_objects.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
In file included from ../../../../Modules/_remote_debugging/frames.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../../../Modules/_remote_debugging/frame_cache.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
1 warning generated.
In file included from ../../../../Modules/_remote_debugging/threads.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
In file included from ../../../../Modules/_remote_debugging/binary_io_writer.c:13:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../../../Modules/_remote_debugging/asyncio.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
1 warning generated.
../../../../Modules/_remote_debugging/binary_io_reader.c:1049:55: warning: comparison of integers of different signs: 'Py_ssize_t' (aka 'long') and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
 1049 |             if (replayed % PROGRESS_CALLBACK_INTERVAL < count) {
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~
In file included from ../../../../Modules/_remote_debugging/binary_io_reader.c:13:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.
In file included from ../../../../Modules/_remote_debugging/subprocess.c:8:
In file included from ../../../../Modules/_remote_debugging/_remote_debugging.h:34:
../../../../Modules/_remote_debugging/../../Python/remote_debug.h:165:1: warning: unused function '_Py_RemoteDebug_ValidatePyRuntimeCookie' [-Wunused-function]
  165 | _Py_RemoteDebug_ValidatePyRuntimeCookie(proc_handle_t *handle, uintptr_t address)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../Modules/_remote_debugging/subprocess.c:100:1: warning: unused function 'find_children_bfs' [-Wunused-function]
  100 | find_children_bfs(pid_t target_pid, int recursive,
      | ^~~~~~~~~~~~~~~~~
2 warnings generated.
../../../../Modules/_hacl/Lib_Memzero0.c:66:6: warning: "Your platform does not support any safe implementation of memzero -- consider a pull request!" [-W#warnings]
   66 |     #warning "Your platform does not support any safe implementation of memzero -- consider a pull request!"
      |      ^
1 warning generated.
../../../../Modules/socketmodule.c:4358:33: warning: comparison of integers of different signs: '__size_t' (aka 'unsigned long') and '__ptrdiff_t' (aka 'long') [-Wsign-compare]
 4358 |          cmsgh != NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) {
      |                                 ^~~~~~~~~~~~~~~~~~~~~~~~
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/sys/socket.h:358:44: note: expanded from macro 'CMSG_NXTHDR'
  358 |         __CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../Modules/socketmodule.c:4411:33: warning: comparison of integers of different signs: '__size_t' (aka 'unsigned long') and '__ptrdiff_t' (aka 'long') [-Wsign-compare]
 4411 |          cmsgh != NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) {
      |                                 ^~~~~~~~~~~~~~~~~~~~~~~~
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/sys/socket.h:358:44: note: expanded from macro 'CMSG_NXTHDR'
  358 |         __CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../Modules/socketmodule.c:5063:54: warning: comparison of integers of different signs: '__size_t' (aka 'unsigned long') and '__ptrdiff_t' (aka 'long') [-Wsign-compare]
 5063 |             cmsgh = (i == 0) ? CMSG_FIRSTHDR(&msg) : CMSG_NXTHDR(&msg, cmsgh);
      |                                                      ^~~~~~~~~~~~~~~~~~~~~~~~
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/sys/socket.h:358:44: note: expanded from macro 'CMSG_NXTHDR'
  358 |         __CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 warnings generated.
../../../../Modules/_sqlite/connection.c:2303:19: warning: result of comparison of constant 9223372036854775807 with expression of type 'Py_ssize_t' (aka 'long') is always false [-Wtautological-constant-out-of-range-compare]
 2303 |     if (data->len > 9223372036854775807) {  // (1 << 63) - 1
      |         ~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~
1 warning generated.
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:83:11: warning: 'htobe16' macro redefined [-Wmacro-redefined]
   83 | #  define htobe16(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:35:9: note: previous definition is here
   35 | #define htobe16(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:84:11: warning: 'htole16' macro redefined [-Wmacro-redefined]
   84 | #  define htole16(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:41:9: note: previous definition is here
   41 | #define htole16(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:85:11: warning: 'be16toh' macro redefined [-Wmacro-redefined]
   85 | #  define be16toh(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:36:9: note: previous definition is here
   36 | #define be16toh(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:86:11: warning: 'le16toh' macro redefined [-Wmacro-redefined]
   86 | #  define le16toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:42:9: note: previous definition is here
   42 | #define le16toh(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:88:11: warning: 'htobe32' macro redefined [-Wmacro-redefined]
   88 | #  define htobe32(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:37:9: note: previous definition is here
   37 | #define htobe32(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:89:11: warning: 'htole32' macro redefined [-Wmacro-redefined]
   89 | #  define htole32(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:43:9: note: previous definition is here
   43 | #define htole32(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:90:11: warning: 'be32toh' macro redefined [-Wmacro-redefined]
   90 | #  define be32toh(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:38:9: note: previous definition is here
   38 | #define be32toh(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:91:11: warning: 'le32toh' macro redefined [-Wmacro-redefined]
   91 | #  define le32toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:44:9: note: previous definition is here
   44 | #define le32toh(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:93:11: warning: 'htobe64' macro redefined [-Wmacro-redefined]
   93 | #  define htobe64(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:39:9: note: previous definition is here
   39 | #define htobe64(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:94:11: warning: 'htole64' macro redefined [-Wmacro-redefined]
   94 | #  define htole64(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:45:9: note: previous definition is here
   45 | #define htole64(x) (uint64_t)(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:95:11: warning: 'be64toh' macro redefined [-Wmacro-redefined]
   95 | #  define be64toh(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:40:9: note: previous definition is here
   40 | #define be64toh(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/md5module.c:30:
In file included from ../../../../Modules/_hacl/Hacl_Hash_MD5.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:96:11: warning: 'le64toh' macro redefined [-Wmacro-redefined]
   96 | #  define le64toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:46:9: note: previous definition is here
   46 | #define le64toh(x) (uint64_t)(x)
      |         ^
12 warnings generated.
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:83:11: warning: 'htobe16' macro redefined [-Wmacro-redefined]
   83 | #  define htobe16(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:35:9: note: previous definition is here
   35 | #define htobe16(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:84:11: warning: 'htole16' macro redefined [-Wmacro-redefined]
   84 | #  define htole16(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:41:9: note: previous definition is here
   41 | #define htole16(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:85:11: warning: 'be16toh' macro redefined [-Wmacro-redefined]
   85 | #  define be16toh(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:36:9: note: previous definition is here
   36 | #define be16toh(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:86:11: warning: 'le16toh' macro redefined [-Wmacro-redefined]
   86 | #  define le16toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:42:9: note: previous definition is here
   42 | #define le16toh(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:88:11: warning: 'htobe32' macro redefined [-Wmacro-redefined]
   88 | #  define htobe32(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:37:9: note: previous definition is here
   37 | #define htobe32(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:89:11: warning: 'htole32' macro redefined [-Wmacro-redefined]
   89 | #  define htole32(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:43:9: note: previous definition is here
   43 | #define htole32(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:90:11: warning: 'be32toh' macro redefined [-Wmacro-redefined]
   90 | #  define be32toh(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:38:9: note: previous definition is here
   38 | #define be32toh(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:91:11: warning: 'le32toh' macro redefined [-Wmacro-redefined]
   91 | #  define le32toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:44:9: note: previous definition is here
   44 | #define le32toh(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:93:11: warning: 'htobe64' macro redefined [-Wmacro-redefined]
   93 | #  define htobe64(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:39:9: note: previous definition is here
   39 | #define htobe64(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:94:11: warning: 'htole64' macro redefined [-Wmacro-redefined]
   94 | #  define htole64(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:45:9: note: previous definition is here
   45 | #define htole64(x) (uint64_t)(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:95:11: warning: 'be64toh' macro redefined [-Wmacro-redefined]
   95 | #  define be64toh(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:40:9: note: previous definition is here
   40 | #define be64toh(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/sha1module.c:28:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA1.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:96:11: warning: 'le64toh' macro redefined [-Wmacro-redefined]
   96 | #  define le64toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:46:9: note: previous definition is here
   46 | #define le64toh(x) (uint64_t)(x)
      |         ^
12 warnings generated.
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:83:11: warning: 'htobe16' macro redefined [-Wmacro-redefined]
   83 | #  define htobe16(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:35:9: note: previous definition is here
   35 | #define htobe16(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:84:11: warning: 'htole16' macro redefined [-Wmacro-redefined]
   84 | #  define htole16(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:41:9: note: previous definition is here
   41 | #define htole16(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:85:11: warning: 'be16toh' macro redefined [-Wmacro-redefined]
   85 | #  define be16toh(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:36:9: note: previous definition is here
   36 | #define be16toh(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:86:11: warning: 'le16toh' macro redefined [-Wmacro-redefined]
   86 | #  define le16toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:42:9: note: previous definition is here
   42 | #define le16toh(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:88:11: warning: 'htobe32' macro redefined [-Wmacro-redefined]
   88 | #  define htobe32(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:37:9: note: previous definition is here
   37 | #define htobe32(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:89:11: warning: 'htole32' macro redefined [-Wmacro-redefined]
   89 | #  define htole32(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:43:9: note: previous definition is here
   43 | #define htole32(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:90:11: warning: 'be32toh' macro redefined [-Wmacro-redefined]
   90 | #  define be32toh(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:38:9: note: previous definition is here
   38 | #define be32toh(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:91:11: warning: 'le32toh' macro redefined [-Wmacro-redefined]
   91 | #  define le32toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:44:9: note: previous definition is here
   44 | #define le32toh(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:93:11: warning: 'htobe64' macro redefined [-Wmacro-redefined]
   93 | #  define htobe64(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:39:9: note: previous definition is here
   39 | #define htobe64(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:94:11: warning: 'htole64' macro redefined [-Wmacro-redefined]
   94 | #  define htole64(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:45:9: note: previous definition is here
   45 | #define htole64(x) (uint64_t)(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:95:11: warning: 'be64toh' macro redefined [-Wmacro-redefined]
   95 | #  define be64toh(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:40:9: note: previous definition is here
   40 | #define be64toh(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/sha2module.c:31:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA2.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:96:11: warning: 'le64toh' macro redefined [-Wmacro-redefined]
   96 | #  define le64toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:46:9: note: previous definition is here
   46 | #define le64toh(x) (uint64_t)(x)
      |         ^
12 warnings generated.
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:83:11: warning: 'htobe16' macro redefined [-Wmacro-redefined]
   83 | #  define htobe16(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:35:9: note: previous definition is here
   35 | #define htobe16(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:84:11: warning: 'htole16' macro redefined [-Wmacro-redefined]
   84 | #  define htole16(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:41:9: note: previous definition is here
   41 | #define htole16(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:85:11: warning: 'be16toh' macro redefined [-Wmacro-redefined]
   85 | #  define be16toh(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:36:9: note: previous definition is here
   36 | #define be16toh(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:86:11: warning: 'le16toh' macro redefined [-Wmacro-redefined]
   86 | #  define le16toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:42:9: note: previous definition is here
   42 | #define le16toh(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:88:11: warning: 'htobe32' macro redefined [-Wmacro-redefined]
   88 | #  define htobe32(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:37:9: note: previous definition is here
   37 | #define htobe32(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:89:11: warning: 'htole32' macro redefined [-Wmacro-redefined]
   89 | #  define htole32(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:43:9: note: previous definition is here
   43 | #define htole32(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:90:11: warning: 'be32toh' macro redefined [-Wmacro-redefined]
   90 | #  define be32toh(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:38:9: note: previous definition is here
   38 | #define be32toh(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:91:11: warning: 'le32toh' macro redefined [-Wmacro-redefined]
   91 | #  define le32toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:44:9: note: previous definition is here
   44 | #define le32toh(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:93:11: warning: 'htobe64' macro redefined [-Wmacro-redefined]
   93 | #  define htobe64(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:39:9: note: previous definition is here
   39 | #define htobe64(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:94:11: warning: 'htole64' macro redefined [-Wmacro-redefined]
   94 | #  define htole64(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:45:9: note: previous definition is here
   45 | #define htole64(x) (uint64_t)(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:95:11: warning: 'be64toh' macro redefined [-Wmacro-redefined]
   95 | #  define be64toh(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:40:9: note: previous definition is here
   40 | #define be64toh(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/sha3module.c:29:
In file included from ../../../../Modules/_hacl/Hacl_Hash_SHA3.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:96:11: warning: 'le64toh' macro redefined [-Wmacro-redefined]
   96 | #  define le64toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:46:9: note: previous definition is here
   46 | #define le64toh(x) (uint64_t)(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:83:11: warning: 'htobe16' macro redefined [-Wmacro-redefined]
   83 | #  define htobe16(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:35:9: note: previous definition is here
   35 | #define htobe16(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:84:11: warning: 'htole16' macro redefined [-Wmacro-redefined]
   84 | #  define htole16(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:41:9: note: previous definition is here
   41 | #define htole16(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:85:11: warning: 'be16toh' macro redefined [-Wmacro-redefined]
   85 | #  define be16toh(x) __builtin_bswap16(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:36:9: note: previous definition is here
   36 | #define be16toh(x) __bswap16(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:86:11: warning: 'le16toh' macro redefined [-Wmacro-redefined]
   86 | #  define le16toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:42:9: note: previous definition is here
   42 | #define le16toh(x) (uint16_t)(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:88:11: warning: 'htobe32' macro redefined [-Wmacro-redefined]
   88 | #  define htobe32(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:37:9: note: previous definition is here
   37 | #define htobe32(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:89:11: warning: 'htole32' macro redefined [-Wmacro-redefined]
   89 | #  define htole32(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:43:9: note: previous definition is here
   43 | #define htole32(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:90:11: warning: 'be32toh' macro redefined [-Wmacro-redefined]
   90 | #  define be32toh(x) __builtin_bswap32(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:38:9: note: previous definition is here
   38 | #define be32toh(x) __bswap32(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:91:11: warning: 'le32toh' macro redefined [-Wmacro-redefined]
   91 | #  define le32toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:44:9: note: previous definition is here
   44 | #define le32toh(x) (uint32_t)(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:93:11: warning: 'htobe64' macro redefined [-Wmacro-redefined]
   93 | #  define htobe64(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:39:9: note: previous definition is here
   39 | #define htobe64(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:94:11: warning: 'htole64' macro redefined [-Wmacro-redefined]
   94 | #  define htole64(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:45:9: note: previous definition is here
   45 | #define htole64(x) (uint64_t)(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:95:11: warning: 'be64toh' macro redefined [-Wmacro-redefined]
   95 | #  define be64toh(x) __builtin_bswap64(x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:40:9: note: previous definition is here
   40 | #define be64toh(x) __bswap64(x)
      |         ^
In file included from ../../../../Modules/blake2module.c:60:
In file included from ../../../../Modules/_hacl/Hacl_Hash_Blake2s.h:35:
In file included from ../../../../Modules/_hacl/include/krml/internal/types.h:89:
../../../../Modules/_hacl/include/krml/lowstar_endianness.h:96:11: warning: 'le64toh' macro redefined [-Wmacro-redefined]
   96 | #  define le64toh(x) (x)
      |           ^
/home/emscripten/emsdk-versions/4.0.12/emsdk/upstream/emscripten/cache/sysroot/include/endian.h:46:9: note: previous definition is here
   46 | #define le64toh(x) (uint64_t)(x)
      |         ^
12 warnings generated.
12 warnings generated.
Created /home/emscripten/buildarea/3.x.rkm-emscripten.emscripten/build/cross-build/wasm32-emscripten/build/python/python3.15.zip (3.81 MiB)
mcc: warning: EXPORTED_FUNCTIONS is not valid with LINKABLE set (normally due to SIDE_MODULE=1/MAIN_MODULE=1) since all functions are exported this mode.  To export only a subset use SIDE_MODULE=2/MAIN_MODULE=2 [-Wunused-command-line-argument]

�[33mtest.test_asyncio.test_base_events skipped -- requires socket support�[0m
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�[33mtest.test_asyncio.test_events skipped -- requires socket support�[0m
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�[33mtest.test_asyncio.test_selector_events skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_sendfile skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_server skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_sock_lowlevel skipped -- requires socket support�[0m
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�[33mtest.test_asyncio.test_staggered skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_streams skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_subprocess skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_taskgroups skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_tasks skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_threads skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_timeouts skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_tools skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_transports skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_unix_events skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_waitfor skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_windows_events skipped -- requires socket support�[0m
�[33mtest.test_asyncio.test_windows_utils skipped -- requires socket support�[0m
�[33mtest.test_concurrent_futures.test_as_completed skipped -- requires threading support�[0m
�[33mtest.test_concurrent_futures.test_deadlock skipped -- requires threading support�[0m
�[33mtest.test_concurrent_futures.test_future skipped -- requires threading support�[0m
�[33mtest.test_concurrent_futures.test_init skipped -- requires threading support�[0m
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�[33mtest.test_concurrent_futures.test_process_pool skipped -- requires threading support�[0m
�[33mtest.test_concurrent_futures.test_shutdown skipped -- requires threading support�[0m
�[33mtest.test_concurrent_futures.test_thread_pool skipped -- requires threading support�[0m
�[33mtest.test_concurrent_futures.test_wait skipped -- requires threading support�[0m
�[33mtest.test_gdb.test_backtrace skipped -- Couldn't find gdb program on the path: [Errno 138] emscripten does not support processes.�[0m
�[33mtest.test_gdb.test_cfunction skipped -- Couldn't find gdb program on the path: [Errno 138] emscripten does not support processes.�[0m
�[33mtest.test_gdb.test_cfunction_full skipped -- Couldn't find gdb program on the path: [Errno 138] emscripten does not support processes.�[0m
�[33mtest.test_gdb.test_misc skipped -- Couldn't find gdb program on the path: [Errno 138] emscripten does not support processes.�[0m
�[33mtest.test_gdb.test_pretty_print skipped -- Couldn't find gdb program on the path: [Errno 138] emscripten does not support processes.�[0m
�[33mtest.test_multiprocessing_fork.test_manager skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_fork.test_misc skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_fork.test_processes skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_fork.test_threads skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_forkserver.test_manager skipped -- requires working os.fork()�[0m
�[33mtest.test_multiprocessing_forkserver.test_misc skipped -- requires working os.fork()�[0m
�[33mtest.test_multiprocessing_forkserver.test_preload skipped -- requires working os.fork()�[0m
�[33mtest.test_multiprocessing_forkserver.test_processes skipped -- requires working os.fork()�[0m
�[33mtest.test_multiprocessing_forkserver.test_threads skipped -- requires working os.fork()�[0m
�[33mtest.test_multiprocessing_spawn.test_manager skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_spawn.test_misc skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_spawn.test_processes skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_multiprocessing_spawn.test_threads skipped -- No module named '_multiprocessing'�[0m
�[33mtest.test_os.test_windows skipped -- Win32 specific tests�[0m
�[33mtest__interpchannels skipped -- No module named '_interpchannels'�[0m
�[33mtest__interpreters skipped -- No module named '_interpreters'�[0m
�[33mtest_android skipped -- Android-specific�[0m
�[33mtest_apple skipped -- Apple-specific�[0m
�[33mtest_argparse skipped -- test module requires subprocess�[0m
�[33mtest_asyncgen skipped -- requires socket support�[0m
�[33mtest_clinic skipped -- test module requires subprocess�[0m
�[33mtest_cmd_line skipped -- test module requires subprocess�[0m
�[33mtest_crossinterp skipped -- No module named '_interpreters'�[0m
�[33mtest_curses skipped -- No module named '_curses'�[0m
�[33mtest_dbm_gnu skipped -- No module named '_gdbm'�[0m
�[33mtest_dbm_ndbm skipped -- No module named '_dbm'�[0m
�[33mtest_devpoll skipped -- test works only on Solaris OS family�[0m
�[33mtest_docxmlrpc skipped -- requires socket support�[0m
�[33mtest_dtrace skipped -- test module requires subprocess�[0m
�[33mtest_embed skipped -- test module requires subprocess�[0m
�[33mtest_epoll skipped -- test works only on Linux 2.6�[0m
�[33mtest_faulthandler skipped -- test module requires subprocess�[0m
�[33mtest_file_eintr skipped -- test module requires subprocess�[0m
�[33mtest_fork1 skipped -- test module requires working os.fork�[0m
�[33mtest_frame_pointer_unwind skipped -- test requires subprocess support�[0m
�[33mtest_free_threading skipped -- GIL enabled�[0m
�[33mtest_ftplib skipped -- requires socket support�[0m
�[33mtest_generated_cases skipped -- test module requires subprocess�[0m
�[33mtest_getopt skipped -- test module requires subprocess�[0m
�[33mtest_grp skipped -- No module named 'grp'�[0m
�[33mtest_httplib skipped -- requires socket support�[0m
�[33mtest_httpservers skipped -- requires socket support�[0m
�[33mtest_idle skipped -- No module named '_tkinter'�[0m
�[33mtest_imaplib skipped -- requires socket support�[0m
node:internal/modules/cjs/loader:1456
  const err = new Error(message);
              ^

Error: Cannot find module 'ws'
Require stack:
- /home/emscripten/buildarea/3.x.rkm-emscripten.emscripten/build/cross-build/wasm32-emscripten/build/python/python.mjs
    at Module._resolveFilename (node:internal/modules/cjs/loader:1456:15)
    at defaultResolveImpl (node:internal/modules/cjs/loader:1066:19)
    at resolveForCJSWithHooks (node:internal/modules/cjs/loader:1071:22)
    at Module._load (node:internal/modules/cjs/loader:1242:25)
    at wrapModuleLoad (node:internal/modules/cjs/loader:255:19)
    at Module.require (node:internal/modules/cjs/loader:1556:12)
    at require (node:internal/modules/helpers:152:16)
    at Object.listen (file:///home/emscripten/buildarea/3.x.rkm-emscripten.emscripten/build/cross-build/wasm32-emscripten/build/python/python.mjs:1:99158)
    at ___syscall_listen (file:///home/emscripten/buildarea/3.x.rkm-emscripten.emscripten/build/cross-build/wasm32-emscripten/build/python/python.mjs:1:116282)
    at wasm://wasm/02b65c12:wasm-function[16939]:0x730c5a {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/home/emscripten/buildarea/3.x.rkm-emscripten.emscripten/build/cross-build/wasm32-emscripten/build/python/python.mjs'
  ]
}

Node.js v24.14.0

[WebServer] (node:1265863) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
[WebServer] (Use `node --trace-deprecation ...` to show where the warning was created)

* upstream/main: (1475 commits) Docs: replace all `datetime` imports with `import datetime as dt` (python#145640) pythongh-146153: Use `frozendict` in pure python fallback for `curses.has_key` (python#146154) pythongh-138234: clarify returncode behavior for subprocesses created with `shell=True` (python#138536) pythongh-140947: fix contextvars handling for server tasks in asyncio (python#141158) pythonGH-100108: Add async generators best practices section (python#141885) pythonGH-145667: Merge `GET_ITER` and `GET_YIELD_FROM_ITER` (pythonGH-146120) pythongh-146228: Better fork support in cached FastPath (python#146231) pythongh-146227: Fix wrong type in _Py_atomic_load_uint16 in pyatomic_std.h (pythongh-146229) pythongh-145980: Fix copy/paste mistake in binascii.c (python#146230) pythongh-146092: Raise MemoryError on allocation failure in _zoneinfo (python#146165) pythongh-91279: Note `SOURCE_DATE_EPOCH` support in `ZipFile.writestr()` doc (python#139396) pythongh-146196: Fix Undefined Behavior in _PyUnicodeWriter_WriteASCIIString() (python#146201) pythongh-143930: Reject leading dashes in webbrowser URLs pythongh-145916: Soft-deprecate ctypes.util.find_library (pythonGH-145919) pythongh-146205: Check the errno with != 0 in close impls in select module (python#146206) pythongh-146171: Fix nested AttributeError suggestions (python#146188) pythongh-146099: Optimize _GUARD_CODE_VERSION+IP via function version symbols (pythonGH-146101) pythongh-145980: Add support for alternative alphabets in the binascii module (pythonGH-145981) pythongh-145754: Update signature retrieval in unittest.mock to use forwardref annotation format (python#145756) pythongh-145177: Add emscripten run --test, uses test args from config.toml (python#146160) ...

Apply changes from importlib_metadata 8.9.0

058598d

jaraco requested review from FFY00 and warsaw as code owners March 20, 2026 18:51

bedevere-app bot mentioned this pull request Mar 20, 2026

Better fork support in cached FastPath instances #146228

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Add blurb

8d3afbd

jaraco added 2 commits March 20, 2026 15:30

Suppress deprecation warning in fork.

199e029

Remove duplicate import.

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jaraco enabled auto-merge (squash) March 20, 2026 20:06

jaraco merged commit b5e4c46 into python:main Mar 20, 2026
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bedevere-app bot removed the awaiting core review label Mar 20, 2026

hoodmane mentioned this pull request Mar 23, 2026

WASM Emscripten 3.x fails with: Cannot find module 'ws' #146325

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mhsmith mentioned this pull request Mar 24, 2026

Improvements to the Emscripten buildbot python/buildmaster-config#687

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pablogsal mentioned this pull request Apr 4, 2026

gh-130273: Fix traceback color output with unicode characters #142529

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gh-146228: Better fork support in cached FastPath#146231

gh-146228: Better fork support in cached FastPath#146231
jaraco merged 4 commits intopython:mainfrom
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